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ARTIFICIAL CULTURE TECHNIQUES FOR REARING LARVAE OF THE CHALCIDOID PARASITE, BRACHYMERIA INTERMEDIA
Author(s) -
THOMPSON S. N.
Publication year - 1980
Publication title -
entomologia experimentalis et applicata
Language(s) - French
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1980.tb02957.x
Subject(s) - biology , trichoplusia , larva , pupa , parasite hosting , botany , noctuidae , world wide web , computer science
The respiration of pupae of Trichoplusia ni decreased considerably following parasitization by the chalcidoid Brachymeria intermedia. Furthermore, the process of host tissue development appeared to be arrested within 48 hr indicating that this parasite quickly kills the host insect. The rate of oxygen consumption of parasitized pupae corresponded well with the observed development of the parasite. Parasite larvae fed actively and grew on conventional defined artificial media and larval development was completed on several diets of variable composition. However, following the elimination of the meconium most individuals died as prepupae. Few pupae were obtained and no adults emerged. Survival appeared to correlate with the observable protein content of developing larvae and possible factors influencing further development were discussed. RÉSUMÉ ETUDES PRELIMINAIRES SUR LE DEVELOPPEMENT DE TECHNIQUES D'ELEVAGES ARTIFICIELS DU CHALCIDIEN PARASITOIDE , BRACHYMERIA INTERMEDIA NEES La respiration des chrysalides de Trichoplusia ni diminue brutalement après attaque par Brachymeria intermedia. De plus, le développement des tissus de l'hôte paraît être arreté en 48 h, montrant que ce parasite tue rapidement l'insecte hôte. Le taux de consommation de la nymphe parasitée correspond bien au développement observé du parasite. Les larves du parasite consomment activement et croissent sur substrat artificiel conventionnel et le développement larvaire est complet sur différents régimes de compositions variables. Cependant, à la suite de l'élimination du méconium, la plupart des individus meurent en prénymphes. Quelques nymphes sont obtenues mais aucun adulte n'émerge. La survie paraît liée à la teneur mesurable de proteïnes de la larve en développement; des facteurs pouvant influer sur le développement ultérieurs sont discutés.

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